Cage for ball-bearings.



E. G. HOFFMANN DEGI). A.W.K1DDLB @L A. M. BECKER, BXBUUTORS. CAGE FOR BALL BEARINGS.

APPLIOATION HLBD 19213.10, 1911.

1,103j965, Patented July 21,1914.

Wy. Z

, lfnNrrEn 'erstens PATENT orrree.

ERNSTGuerrieriv HOFFMANN, DECEAsED, LATE or NEW ROCHELLE, NEW "sortir,l EY ALFRED W. EIDELE, E NEW YoEK, N. s, AND AM'ALIE MATHILDE EECKEE, 0E ERANKEoEmoNmHE-'MAIM GERMANY, EXECUToEs.

CAGE EOE EALLEEAEINGS.

Litoranea.

To (1.7.1 Julio/11507710);concern.'

i Re it known `that we, Atrium VAT'rs Kinnur., ay resident ot the :borough of Manhatl tan of the city otl New York, State of New York, and AMALIE ll/Lw'rinLDE BECKER, a resident ot the city of Frankfort-oath@ Main, Germany, (formerly AMALIE Ma- 'riIiLnE BAUUANN, of the city of New Rochelle, county of lVcstehester, and State ,of New York,) the executors named in the last will and testament of ERNST GUs'rAv Horr- MANN, deceased, late a resident of the city ol New leehelle aforesaid, respectfully represent that the said llnNs'r (,lrUs'rAv Horn MANN lill make certain new and useful Im.-

' provenientsl in Cages for Ball-Bearings, of

which the following is a specification, referenee being;` had to the accompanying drawings. forming a part hereof.

The objeet of the invention is to provide a rage 'For ball bearings which retains the balls in plaec'by ball retainingy or spacing' members which are so arranged as to minimize the 'friction between the retaining means and the balls and which are also cheap, ef- Vl'eetiri and simple to make.

ln said drawings which illustrate a simple and praetieal embodiment of the invenlion: Figure l is a transverse sectional view olE the rage with the balls in place therein. Fig. 2 is an end elevation ot the cage with the balls also in plaee. Fija". 2l is a partial side view ot the bearing, the clip shown in lFia". 7 having been removed. Fir'. -t is a eresia sectional view taken on they line l-t ol Fig. 9. Fig'. 5 is a View ol the retaining` ring'or spaeer which is utilized at the end ol' the eagge, Fig. (3 is an enlarged section ot' the retaining' rino` or spacer' taken on a plane. which passes through the center of one of the, halls, Fig. 7 shows in detail the spring clip which is utilized to hold the retainingrings or spacers in place and Fig, 8 is a view ot' the blank from which the clip is made. i

The same reference character is used to designate the same part \\'here\'er it appears in the speeileation and also thel drawinfv.

A ball bearin, member is shown in Figs. l, 2 and :l haring balls A and a cage comprisingv the ball retaining rings or spacers B and clips C which serve as connecting means i'oiholding` the retaining members in place.

speciacationtf Letters Patent.

.Patented July 2i. rara,

Application filed February 10, 1911. Serial No. 607,730.

Each of the retainingrings comprises cnpshaped portions for receiving the balls and the ball engaging surfaces of said cupshaped portions are curved so as to conform to the surface of a sphere whose radius is greater than the radius of the balls which are seated therein as it can be clearly seen from an inspection of Fig. G. As it is well known that the balls in a ball bearing rotate on an axis of their own it will be apparent .that if retaining` members engage the balls at the extremity of the axis there will oe less friction than if the retaining member or members engage the balls at the circumference which travels at the fastest'rate of speed. Now from said figure it will be seen that the retaining rings engage the balls at the extremities of the;axis of rotation thereof and therefore the rictional resistn ance between the balls and the rings is reduced to a minimum,

r1 he retaining rings are stamped from flat sheet metal so that the thickness of the metal, in all the parts is substantially the same. l`hev are also curved in cross section along all lines radiating from the center of the bearing, in order to impart rigidity thereto and as the rings are formed of sheet nieta-l it will be apparent that there is produced a ball retaining member which is comparatively light, strong', sti ll' and cheap'to naaimfactnre.

l`he springl clip shown in Fife? for holding' the retaining rings in place can also he lormed by cutting 'from sheet metal a blank haring' the form lshown in Fig. 8 and then by bending said blank to the curve shown in Fig'. 7. A

ln order to assemble the bearingmember all that is necessary is to take one ofthe retain-insr rines and place the balls in the anpM shaped portions thereof then place on the top of the balls the other retaining rings and subsequently spring the clips over the neck portions or those portions of the retaining rings which is between the cup-shaped portions, lt will be observed that the spring elips therefore serve a double fnnctiom namely, that of a yieldable connecting means 'for holding the retaining rings or members in place and also as a means which readily permits the assembling and disassembling of the parts.

roo

4on opposite sides of the balls and bent C- shaped ringv holding Clips, the balls being held in plaee between and by the two annular rings, each ring having a series of cupvshaped ball-receiving portions Whose inner surfaces conform to the surface of a sphere having a greater radius than the radius of the balls which engage or are engaged by said surfaces, and also having neck portions that are curved in cross section between the cup-shaped ball-receiving portions, the C- shaDed clips engaging the curved neck por tion to hold the rings in place on opposite sides of the balls.

This specification signed in the city of N ew York, in the State of New York, by ALFRED W. KIDDLE, and'in the city of Leipzig, Empire of Germany, by AMALIE MA- rrHILDE BECKER.

ALFRED W. KIDDLE,

, AMALIE MATHILDE BECKER,

Eecuof's of the Estate of Emst Gustav Hoffmann, deceased.

RUDOLPH FRICKE, Dems KRAHL. 

